WPR10LA069

NTSB accident investigation · Mahre Starduster SA300 · Zillah, WA · November 29, 2009

Accident · Serious injuriesLimited investigationFinal report
Date
November 29, 2009, 15:12 local (23:12 UTC)
Place
Zillah, WA
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N480DMMahre Starduster SA300
Defining event
Maneuvering: Low altitude operation/event
Weather
Visual (VMC) · Day
Status
Completed · report May 6, 2010
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20091129051669A
Case key
75107

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot’s failure to maintain aircraft control during a low-altitude maneuver.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parametersAircraft › Aircraft oper/perf/capability · Not attained/maintainedMahre STARDUSTER SA300: 1 caseAll aircraft: 1,269 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotMahre STARDUSTER SA300: 1 caseAll aircraft: 9,295 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot reported that he was conducting a low-level, high-speed, pass over a remote control airplane airstrip. He stated that during the pass he pulled up and rolled the airplane. About halfway through the roll he lost sight of the horizon and stated that he "knew I was in trouble." The airplane impacted the ground shortly thereafter. Spectators at the airstrip reported that the pilot flew from southeast to northwest, and performed a fly-by approximately 20 to 30 feet above ground level. At the end of the airstrip, the airplane increased in altitude to about 100 feet and then entered a roll. No mechanical malfunctions were noted with the airplane.

Factual narrative

On November 29, 2009, at 1512 Pacific standard time, a Mahre Starduster SA300, N480DM, collided with terrain while maneuvering near Zillah, Washington. The airline transport pilot, the sole occupant, was operating the airplane under the provisions of 14 Code of Federal Regulations Part 91. The pilot sustained serious injuries. The airplane was substantially damaged. Visual meteorological conditions prevailed and no flight plan was filed. A witness, who was a remote control (RC) airplane pilot, was with several other RC airplane pilots at an airstrip that was used for RC airplane flying. According to the witness, the accident pilot was also a RC airplane pilot. The accident pilot had been planning on performing a fly-by in the accident airplane. The pilot overflew the airstrip about 1,200 to 1,500 feet above ground level. The witness assumed the pilot was checking that no RC airplanes were flying at the time. The pilot then returned, flying from southeast to northwest, and performed a fly-by approximately 20 to 30 feet above ground level. At the end of the airstrip, the airplane increased in altitude to about 100 feet and then entered a barrel roll to the right. The airplane lost altitude during the barrel roll and then impacted the ground. The witness reported that the winds were calm. The pilot submitted a written statement. He reported that he was conducting a low-level, high-speed, pass over an airstrip. During the pass, he pulled up and rolled the airplane. He stated that about halfway through the roll, he lost sight of the horizon and he knew that he was in trouble. The airplane impacted the ground shortly thereafter. The pilot additionally reported that his airman medical application had been denied in 2000 due to Parkinson’s disease. He had undergone a medical procedure for the disease and was working with the Federal Aviation Administration to reissue his airman medical certificate. The pilot reported approximately 11,700 hours total flight time, with 400 hours in the accident airplane. No mechanical malfunctions were reported.

Aircraft

Registration
N480DM
Reported as
Mahre Starduster SA300
Category
Airplane, amateur-built
Serial number
1454
Airframe hours
439
Engine
Textron Lycoming GO-480-B1A6, 274 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
David Mahre
Registered owner
David Mahre
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Continuous airworthiness · April 1, 2009 · 13 hours before
Departed
YKM · Yakima, WA
Destination
YKM · Yakima, WA

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
58
Injuries
Serious
Certificates
Flight instructor, Airline transport, Commercial
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane
Last flight review
September 1, 1999
Seat
Rear
Flight hours
11,700 total · 400 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
100° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
46 °F, dew point 34 °F
Altimeter
30.30 inHg
Observed at
YKM, 15 nm away

Docket · 3

The files NTSB released with the investigation on February 12, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 580 KB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.